Model comparison
Claude Haiku 5.5 vs Muse Glimmer
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 41.7 on the Noometry Index.
Last verified . 1 shared benchmarks.
MetaSummary
- They share 1 benchmark with published results for both. Claude Haiku 5.5 scores higher in 4 categories and Muse Glimmer in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 38.8.
- Muse Glimmer has downloadable open weights; the other is API-only.
Side by side
| Claude Haiku 5.5 | Muse Glimmer | |
|---|---|---|
| Provider | Anthropic | Meta |
| Noometry Index | 49.5 | 41.7 |
| Released | 2026-10-07 | 2026-08-10 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.50 | — |
| Results tracked | 9 | 15 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), Muse Glimmer: 40.4 (#142)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| LMArena WebDev | 1587 | 1355 |
| SciCode | — | 44.9% |
| LMArena Coding | — | 1416 |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), Muse Glimmer: 25.7 (#144)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| NYT Connections (extended) | 65.7% | — |
| CritPt | — | 2.6% |
| LMArena Hard Prompts | — | 1396 |
| Mystery Game Puzzles | 30% | — |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), Muse Glimmer: 38.8 (#125)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| LMArena Math | — | 1417 |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), Muse Glimmer: 38.5 (#143)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |
| LMArena Expert | — | 1386 |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), Muse Glimmer: —
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, Muse Glimmer: 50.5 (#122)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| LMArena Non-English | — | 1384 |
| LMArena Chinese | — | 1412 |
| LMArena Russian | — | 1390 |
Instruction Following Not comparable
Claude Haiku 5.5: —, Muse Glimmer: 72.6 (#135)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | — | 1375 |
Long Context Not comparable
Claude Haiku 5.5: —, Muse Glimmer: 42.1 (#129)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | — | 1382 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, Muse Glimmer: 57.5 (#126)
| Benchmark | Claude Haiku 5.5 | Muse Glimmer |
|---|---|---|
| LMArena Text | — | 1389 |
| LMArena Creative Writing | — | 1339 |
| LMArena Multi-Turn | — | 1399 |
Frequently asked questions
Is Claude Haiku 5.5 better than Muse Glimmer?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 41.7 on the Noometry Index.
Is Claude Haiku 5.5 or Muse Glimmer better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 40.4 in the Noometry coding category.
How many benchmarks do Claude Haiku 5.5 and Muse Glimmer share?
1 benchmark has published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Muse Glimmer has 15.